National Oceanic and Atmospheric Administration National Weather Service United States Department of Commerce
Current conditions at

Watertown, Watertown Municipal Airport (KATY)

Lat: 44.9°NLon: 97.15°WElev: 1745ft.

Fair

66°F

19°C

Humidity 54%
Wind Speed SW 8 mph
Barometer 29.89 in (1012.5 mb)
Dewpoint 49°F (9°C)
Visibility 10.00 mi
Last update 20 Mar 3:53 pm CDT
Extended Forecast for

Willow Lake SD

  • This Afternoon

    This Afternoon: Mostly sunny, with a high near 70. West northwest wind around 10 mph.

    High: 70 °F

    Mostly Sunny

  • Tonight

    Tonight: Mostly clear, with a low around 46. Northwest wind 5 to 11 mph becoming southeast in the evening.

    Low: 46 °F

    Mostly Clear

  • Saturday

    Saturday: Sunny, with a high near 78. Southwest wind 9 to 11 mph.

    High: 78 °F

    Sunny

  • Saturday Night

    Saturday Night: Mostly cloudy, with a low around 32. Breezy, with a north northeast wind 11 to 16 mph increasing to 21 to 26 mph in the evening. Winds could gust as high as 39 mph.

    Low: 32 °F

    Mostly Cloudy
    and Breezy

  • Sunday

    Sunday: Partly sunny, with a high near 46. Breezy, with a north wind 15 to 20 mph.

    High: 46 °F

    Mostly Cloudy
    and Breezy
    then Mostly
    Sunny

  • Sunday Night

    Sunday Night: Mostly clear, with a low around 27. North wind 7 to 11 mph becoming east southeast after midnight.

    Low: 27 °F

    Mostly Clear

  • Monday

    Monday: A slight chance of rain. Partly sunny, with a high near 51. Breezy, with a south wind 8 to 13 mph increasing to 15 to 20 mph in the afternoon. Winds could gust as high as 28 mph. Chance of precipitation is 20%.

    High: 51 °F

    Slight Chance
    Rain and
    Breezy

  • Monday Night

    Monday Night: Mostly cloudy, with a low around 33. South southeast wind around 15 mph.

    Low: 33 °F

    Mostly Cloudy

  • Tuesday

    Tuesday: Partly sunny, with a high near 55. East wind around 15 mph.

    High: 55 °F

    Partly Sunny

Detailed Forecast

This Afternoon
Mostly sunny, with a high near 70. West northwest wind around 10 mph.
Tonight
Mostly clear, with a low around 46. Northwest wind 5 to 11 mph becoming southeast in the evening.
Saturday
Sunny, with a high near 78. Southwest wind 9 to 11 mph.
Saturday Night
Mostly cloudy, with a low around 32. Breezy, with a north northeast wind 11 to 16 mph increasing to 21 to 26 mph in the evening. Winds could gust as high as 39 mph.
Sunday
Partly sunny, with a high near 46. Breezy, with a north wind 15 to 20 mph.
Sunday Night
Mostly clear, with a low around 27. North wind 7 to 11 mph becoming east southeast after midnight.
Monday
A slight chance of rain. Partly sunny, with a high near 51. Breezy, with a south wind 8 to 13 mph increasing to 15 to 20 mph in the afternoon. Winds could gust as high as 28 mph. Chance of precipitation is 20%.
Monday Night
Mostly cloudy, with a low around 33. South southeast wind around 15 mph.
Tuesday
Partly sunny, with a high near 55. East wind around 15 mph.
Tuesday Night
Mostly cloudy, with a low around 35.
Wednesday
Mostly cloudy, with a high near 61.
Wednesday Night
Mostly cloudy, with a low around 37.
Thursday
Mostly sunny, with a high near 48. Breezy.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Willow Lake SD
 44.62°N 97.65°W (Elev. 1762 ft)
Last Update:
4:21 pm CDT Mar 20, 2026
Forecast Valid:
4pm CDT Mar 20, 2026-6pm CDT Mar 26, 2026
 
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Additional Resources

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High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation